Releasable modular self-locking joint and assembly method

Abstract

To provide a self-locking joint and an assembly method that can easily realize self-locking connection and release of a module and improve the efficiency of assembly and disassembly. [Solution] The self-locking joint comprises a box and a self-locking connecting rod which fit together, the box has an open top and a T-shaped chute at the bottom, a T-shaped slider is attached to the T-shaped chute, a female threaded removal hole is opened at the end of the T-shaped slider on the side wall of the joint box, two self-locking hooks are arranged opposite each other and attached to the box by a connecting shaft, a compressed return spring is fixed between the outside of the clamping ends of both self-locking hooks and the side wall of the box, the clamping ends of both self-locking hooks are restricted from over-rotating inward by a restricting shaft, and a tension spring is provided between the inside of the free end of the self-locking hook and the T-shaped slider for removal.

Description

[Technical field]

[0001] The present invention relates to the field of building engineering technology, in particular to a releasable modular self-locking joint and assembly method. [Background technology]

[0002] Steel modular building adopts modular design and manufacturing process, and the building is divided into several standardized modules, which are produced and assembled in the factory, and then transported to the site for installation. Steel modular building has the advantages of fast construction speed, controllable quality, environmental protection and energy saving, and is therefore widely used in the modern construction field. The manufacturing process of steel modular building requires detailed design and calculation to ensure the structural stability and safety of the building. The structural system of steel modular building is the key to guarantee the stability and safety of the building. The existing modular self-locking and detachable joints have the problem that they can only be removed from the inside, which makes them difficult to remove. When the joints need to be removed or repaired, extra work and special tools are required, which not only increases the maintenance cost but also brings challenges to the removal of the structure. Summary of the Invention [Problem to be solved by the invention]

[0003] In view of the problems existing in the prior art, the present invention aims to provide a releasable modular self-locking joint and assembly method that allows for quick installation by self-locking and allows the joint to be installed and removed from outside the structure, solving the problem of difficult to remove and repair of existing insertable self-locking joints. [Means for solving the problem]

[0004] In order to achieve the above objectives, the technical solution of the present invention is as follows:

[0005] The releasable modular self-locking joint comprises a joint self-locking box and a self-locking connecting rod that fit together, The joint self-locking box includes a joint box, a second fixing plate located inside the joint box, a first fixing plate, a connecting shaft, a regulating shaft, a self-locking hook, a return spring, a T-shaped slider, and a tension spring, The joint box has an open top and a T-shaped chute at the bottom, a T-shaped slide is attached to the T-shaped chute, a removal hole having an internal thread is provided on a side wall of the joint box at a position corresponding to the end of the T-shaped slide, a second fixed plate and a first fixed plate are disposed opposite each other and fixed to the inner wall of the joint box via a bolt, two self-locking hooks are disposed opposite each other and mounted between the second fixed plate and the first fixed plate via a connecting shaft, a return spring in a compressed state is fixed between the outer sides of the clamping ends of both self-locking hooks and the side wall of the joint box, a restricting shaft is provided on the second fixed plate and / or the first fixed plate for restricting the clamping ends of both self-locking hooks from over-rotating inward, a sear is provided on the inner side of the free end of the self-locking hook and on the T-shaped slider, and both ends of two tension springs are respectively fixed to the free ends of the self-locking hooks and the sear of the T-shaped slider, The self-locking connecting rod has a tapered insert and a locking groove for receiving the self-locking hook.

[0006] Furthermore, the clamping end of the self-locking hook has a hook-shaped structure and is beveled, and the bevel fits into the tapered surface of the tapered insertion portion.

[0007] Furthermore, the bolt is a threaded plug.

[0008] Furthermore, a threaded plug is fitted in the removal hole.

[0009] Furthermore, the center of the end of the screw plug has a hexagonal hole.

[0010] Furthermore, both the connecting shaft and the regulating shaft are provided on the first fixed plate, and the second fixed plate is provided with a connecting hole through which the connecting shaft can pass and a regulating hole through which the regulating shaft can pass.

[0011] Furthermore, both ends of the return spring are welded to the outside of the self-locking hook and the inside of the side wall of the joint box, respectively.

[0012] The assembly method of the releasable modular self-locking joint includes the steps of: fitting the through holes of the two self-locking hooks onto the connecting shaft of the first fixed plate, and passing the connecting shaft and the regulating shaft of the first fixed plate through the connecting hole and the regulating hole of the second fixed plate, respectively, to complete the assembly of the second fixed plate and the first fixed plate; connecting one end of each of the two tension springs to the barb of the T-shaped slider and the other end to the barb of the self-locking hook, and respectively connecting the two self-locking hooks to the T-shaped slider; Further, the assembled first fixing plate, second fixing plate, self-locking hook and T-shaped slider are accommodated in a joint box, the T-shaped slider is put into a T-shaped chute of the joint box, and then the first fixing plate, the second fixing plate and the joint box are fixed with a screw plug; The method further includes the steps of welding one end of each of the two return springs to the outer upper part of the self-locking hook and the other end to the inner wall of the joint box, and finally sealing the pre-prepared removal holes with screw plugs to complete the assembly of the joint self-locking box. Effect of the Invention

[0013] Compared with the prior art, the present invention has the following significant advantages:

[0014] The releasable modular self-locking joint of the present invention can realize the insertion-type self-locking connection of the modular joint, no connection tools are required on-site, the modular units can be quickly assembled, and the assembly efficiency of the steel structure modular building is greatly improved.

[0015] The releasable modular self-locking joint of the present invention is simple in structure design and processing, which reduces the cost and time of project pre-preparation.

[0016] All the components in the present invention can be manufactured and completed in the factory, and can be assembled by on-site assembly. The assembly process is very simple, which can effectively simplify the construction process, improve on-site construction efficiency, and save construction time.

[0017] The releasable modular self-locking joints according to the present invention provide greater flexibility and sustainability to modular construction due to their conveniently removable nature, allowing the construction to be dismantled from the outside and reducing construction requirements. [Brief description of the drawings]

[0018] [Figure 1] FIG. 1 is a schematic diagram of a releasable modular self-locking joint according to the present invention; [Diagram 2] FIG. 2 is a schematic diagram of a joint box according to the present invention. [Diagram 3] FIG. 4 is a schematic structural view of a second fixing plate according to the present invention. [Figure 4] FIG. 2 is a schematic structural view of a first fixing plate according to the present invention. [Diagram 5] FIG. 2 is a structural schematic diagram of a self-locking hook according to the present invention. [Figure 6] 1 is a schematic structural diagram of a T-shaped slider according to the present invention; [Figure 7] FIG. 2 is a schematic diagram showing the configuration of a return spring according to the present invention. [Figure 8] 1 is a schematic diagram of the structure of a tension spring according to the present invention; [Figure 9] FIG. 2 is a structural schematic diagram of the screw plug according to the present invention. [Figure 10] FIG. 2 is a structural schematic diagram of a self-locking connecting rod according to the present invention; [Figure 11] FIG. 2 is a schematic diagram of a removal rod according to the present invention. [Figure 12]1A-1D are schematic diagrams of the release and removal process of the releasable modular self-locking joint according to the present invention; [Figure 13] 1 is a schematic diagram of the structure of a combination plate according to the present invention; [Figure 14] 1 is a structural schematic diagram of a prefabricated building according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] The technical solution of the present invention will be further described below with reference to the drawings.

[0020] As shown in FIG. 1, the releasable modular self-locking joint according to the present invention comprises a joint self-locking box and a self-locking connecting rod 10 which fit together to realize an assembly connection of a modular building.

[0021] The joint self-locking box includes a joint box 1, a first fixed plate 3, a second fixed plate 2, a self-locking hook 4, a T-shaped slider 5, a return spring 6, and a tension spring 7. As shown in Fig. 2, the joint box has an upward-opening structure, and a T-shaped chute 102 is provided at the bottom, with a removal hole 101 opened at a position corresponding to the position of the T-shaped chute 102 under the side wall of the joint box 1. Two first screw plug holes 103 that connect and fix the first fixed plate 3 and the second fixed plate 2 are opened in two side walls adjacent to the side wall with the removal hole 101 opened.

[0022] As shown in Fig. 4, the first fixed plate 3 is a fixed plate having the same shape as the joint box in cross section, and is provided with two connecting shafts 301 through which the self-locking hooks 4 pass, two regulating shafts 302 that regulate the rotation direction of the self-locking hooks, and a second screw plug hole 303 that connects the first fixed plate 3 to the joint box 1. As shown in Fig. 3, the second fixed plate 2 is also a fixed plate having the same shape as the joint box in cross section, and is provided with two connecting holes 201 through which the connecting shafts 301 pass, two regulating holes 202 through which the regulating shafts 302 pass, and a third screw plug hole 203 that connects the second fixed plate 2 to the joint box 1.

[0023] As shown in Fig. 5, the self-locking hook 4 has a hook structure 401 located at the clamping end, a through hole 402, and a first sear 403 located at the free end, and two of the self-locking hooks 4 are provided symmetrically in the joint box 1, and the self-locking hooks 4 are fixed between the first fixed plate 3 and the second fixed plate 2, and the through hole 402 is attached to the connecting shaft 301 so that the self-locking hooks 4 can rotate around the connecting shaft 301. As shown in Fig. 7, one end of the return spring 6 is welded to the outer upper part of the self-locking hook 4, and the other end is welded to the inner wall of the joint box. The regulating shaft 302 is located inside the clamping ends of the self-locking hooks 4 so as to regulate the clamping ends of the two self-locking hooks 4 from over-rotating inwards.

[0024] As shown in Fig. 6, the T-shaped slider 5 is provided with second sear 501 on each side, and the T-shaped slider 5 is accommodated in the T-shaped chute 102 in the joint box, and the second sear 501 of the T-shaped slider 5 is connected to the tension spring 7. As shown in Fig. 8, one end of the tension spring 7 is connected to the first sear 403 of the self-locking hook 4, and the other end is connected to the second sear 501 of the T-shaped slider 5.

[0025] A first fixing plate 3 is connected to one side of the joint box 1, and a screw plug passes through the first screw plug hole 103 and the second screw plug hole 303, thereby connecting and fixing the first fixing plate 3 to the joint box 1. A second fixing plate 2 is connected to the inner wall on the opposite side of the joint box 1, and a screw plug passes through the first screw plug hole 103 and the third screw plug hole 203, thereby connecting and fixing the second fixing plate 2 to the joint box 1. As shown in Fig. 9, the screw plug has a hexagonal hole 801 that can be easily attached and detached. A screw plug that seals the joint box is also attached to the removal hole 101.

[0026] As shown in FIG. 10, the self-locking connecting rod 10 includes a top plate, a tapered insertion portion 1001 located on the underside of the top plate, and a locking groove 1002 for accommodating a self-locking hook. The tapered insertion portion 1001 has a symmetrical structure and has two inclined surfaces. The tapered insertion portion fits into the hook structure 401.

[0027] The assembly method of the releasable modular self-locking joint of the present invention includes fitting the through holes 402 of the two self-locking hooks 4 onto the connecting shaft 301 of the first fixed plate 3, making the connecting shaft 301 and the regulating shaft 302 of the first fixed plate 3 pass through the connecting hole 201 and the regulating hole 202 of the second fixed plate 2 respectively, completing the assembly of the second fixed plate 2 and the first fixed plate 3, connecting one end of each of the two tension springs 7 to the second sear 501 of the T-shaped slider and the other end to the first sear 403 of the self-locking hook, connecting both self-locking hooks to the T-shaped slider respectively, and then The first fixed plate 3, second fixed plate 2, self-locking hook 4, and T-shaped slider 5 assembled as above are accommodated in joint box 1, and the T-shaped slider 5 is put into the T-shaped chute 102 of the joint box. Next, the first fixed plate 3 and the second fixed plate 2 are fixed to the joint box 1 with screw plugs. Furthermore, one end of each of the two return springs 6 is welded to the outer upper part of the self-locking hook 4, and the other end is welded to the inner wall of the joint box 1, respectively. Finally, the pre-installed removal holes are sealed with screw plugs, thereby completing the assembly of the joint self-locking box.

[0028] The self-locking process and release / removal method of the releasable modular self-locking joint are as follows:

[0029] The self-locking connecting rod 10 is inserted into the joint self-locking box, and the inclined surface of the tapered insertion portion 1001 comes into contact with the inclined surface of the hook structure 401. The self-locking connecting rod 10 presses the self-locking hooks 4 on both sides to rotate around the connecting shaft 301. Due to the action of the regulating shaft 302, the self-locking hooks 4 can only rotate outward, and the return spring 6 is compressed. When the tapered insertion portion 1001 is fully inserted, the return spring 6 springs back and presses the self-locking hooks 4 to rotate inward around the connecting shaft 301, so that the hook structure 401 is inserted into the locking groove 1002, and the hook structure 401 and the locking groove 1002 come into contact with each other, thereby achieving a self-locking connection.

[0030] When it is necessary to release the lock and remove it, first use a hex driver to loosen and remove the screw plug located in the removal hole of the joint box, and then use a removal rod 11 with a male thread at one end to rotate the removal rod 11 to match the removal hole 101 and screw it into the joint box 1, as shown in Figure 11, to push the T-shaped slider 5 away from its original position, and at the same time pull the tension spring 7, causing the free end of the self-locking hook 4 to rotate inward and the clamping end of the self-locking hook 4 to rotate outward, that is, the self-locking hook is in an open state, and the release of the self-locking device is realized, and the two connected modules are removed, as shown in Figure 12.

[0031] The prefabricated building using the releasable modular self-locking joint of the present invention comprises the releasable modular self-locking joint, a modular upper steel column 13, and a modular lower steel column 14, the self-locking connecting rod 10 of the releasable modular self-locking joint is fixed to the lower end of the modular upper steel column 13 to form an upper joint steel structural module, the joint self-locking box is mounted in the modular lower steel column 14 to form a lower joint steel structural module, and the self-locking connecting rod 10 of the upper joint steel structural module is inserted into the joint self-locking box of the lower joint steel structural module to realize a self-locking connection with the lower joint steel structural module.

[0032] When there are multiple modular upper steel columns 13 and multiple modular lower steel columns 14 to be assembled, a combination plate 12 must also be used. The combination plate 12 has N insertion holes 1201, where N is equal to the number of modular upper steel columns 13 and modular lower steel columns 14, as shown in FIG. 13. The multiple self-locking connecting rods 10 of the upper joint steel structure module are inserted into the insertion holes 1201 of the combination plate 12, and then inserted into the joint self-locking box of the lower joint steel structure module to achieve a self-locking connection, and the self-locking connection between the upper joint steel structure module and the lower joint steel structure module is achieved, as shown in FIG. 14.

[0033] When steel structural modules are connected by the releasable modular self-locking joint of the present invention, self-locking can be realized, which reduces the amount of work on site and improves efficiency. When the structure needs to be removed, just loosen and remove the screw plugs on both sides of the joint box 1 with a hex driver, insert the removal rod 11 into the removal hole 101 of the joint box, and forcefully press the T-shaped slider 5 to open the self-locking device, allowing removal and repair without destroying the original structure, and the removed module can be used repeatedly.

[0034] Although the preferred embodiment of the present invention has been described in detail above, the design concept of the present invention is not limited thereto. Various equivalent transformations can be made to the technical concept of the present invention within the scope of the technical concept of the present invention, and all of these equivalent transformations fall within the scope of protection of the present invention. [Explanation of symbols]

[0035] 1 Joint box 2 Second fixing plate 3 1st fixing plate 4 Self-locking hooks 5 T-shaped slider 6 Return spring 7. Tension Spring 8 Screw cap 10 Self-locking connecting rod 11 Removal rod 12 Combination board 13 Modular steel columns 14 Modular lower steel columns 101 Removal hole 102 T-shaped chute 103 First screw hole 201 Connection hole 202 Restriction hole 203 3rd screw plug hole 301 Connecting shaft 302 Regulatory Axis 303 Second screw plug hole 401 Hook structure 402 Through hole 403 1st Gyakuhaku 501 2nd Gyakuhaku 1001 Tapered insertion part 1002 Locking groove 1101 Male thread 1201 Insertion hole 801 Hexagonal hole

Claims

1. A joint self-locking box and a self-locking connecting rod (10) that fit together, The joint self-locking box includes a joint box (1), a second fixed plate (2) located inside the joint box (1), a first fixed plate (3), a connecting shaft (301), a regulating shaft (302), a self-locking hook (4), a return spring (6), a T-shaped slider (5), and a tension spring (7). The joint box (1) has an open top structure and a T-shaped chute (102) at the bottom. The T-shaped slider (5) is attached to the T-shaped chute (102). A removal hole having an internal thread is provided at a position corresponding to the end of the T-shaped slider (5) on the side wall of the joint box (1). The second fixing plate (2) and the first fixing plate (3) are disposed opposite each other and fixed to the inner wall of the joint box (1) by bolts. Two self-locking hooks (4) are disposed opposite each other and are connected between the second fixing plate (2) and the first fixing plate (3) by a connecting shaft (301). a return spring (6) in a compressed state is fixed between the outside of the clamping ends of both the self-locking hooks (4) and the side wall of the joint box (1); a restricting shaft (302) is provided on the second fixed plate (2) and / or the first fixed plate (3) for restricting the clamping ends of both the self-locking hooks (4) from over-rotating inward; a corresponding reverse hook is provided on the inside of the free end of each of the self-locking hooks (4) and on the T-shaped slider (5); and both ends of two tension springs (7) are fixed to the free end of each of the self-locking hooks (4) and the reverse hook of the T-shaped slider (5), respectively; The self-locking connecting rod (10) has a tapered insertion portion (1001) and a locking groove (1002) for receiving a self-locking hook; The clamping end of the self-locking hook (4) has a hook-shaped structure and is sloped, and the slope fits into the tapered surface of the tapered insertion part (1001); The connecting shaft (301) and the regulating shaft (302) are both provided on the first fixed plate (3), and the second fixed plate (2) is provided with a connecting hole (201) through which the connecting shaft can pass and a regulating hole (202) through which the regulating shaft can pass; A releasable modular self-locking joint, characterized in that each of the two ends of the return spring (6) is welded to the outside of the self-locking hook and to the inside of the side wall of the joint box (1).

2. 2. A releasable modular self-locking joint according to claim 1, characterized in that the bolts are threaded plugs.

3. 2. A releasable modular self-locking joint according to claim 1, characterized in that said withdrawal holes are fitted with threaded plugs.

4. 3. A releasable modular self-locking joint according to claim 2, characterized in that the centre of the end of the threaded plug has a hexagonal hole.

5. 4. A releasable modular self-locking joint according to claim 3, characterized in that the centre of the end of the threaded plug has a hexagonal hole.

6. the through holes (402) of the two self-locking hooks (4) are fitted onto the connecting shafts (301) of the first fixed plate (3), and the connecting shafts (301) and the regulating shafts (302) of the first fixed plate (3) are respectively inserted into the connecting holes (201) and the regulating holes (202) of the second fixed plate (2), thereby completing the assembly of the second fixed plate (2) and the first fixed plate (3); and the steps of connecting one end of each of the two tension springs (7) to the second sear (501) of the T-shaped slider and connecting the other end to the first sear (403) of the self-locking hooks, thereby connecting the two self-locking hooks to the T-shaped slider respectively. Further, the assembled first fixed plate (3), second fixed plate (2), self-locking hook (4), and T-shaped slider (5) are accommodated in the joint box (1), and the T-shaped slider (5) is put into the T-shaped chute (102) of the joint box, and then the first fixed plate (3), second fixed plate (2) and joint box (1) are fixed with screw plugs; The method for assembling a releasable modular self-locking joint according to any one of claims 1 to 5, further comprising the steps of: welding one end of each of the two return springs (6) to the outer side of the upper part of the self-locking hooks (4) and the other end to the inner wall of the joint box (1), respectively; and finally sealing the pre-prepared removal holes with screw plugs, thereby completing the assembly of the joint self-locking box.

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